Jack eye for loom harness



Patented Apr. 1, 1952 JACK EYE FOR LOOM HARNESS William A. Blanchard, Millhury, Mass., assignor to Crompton & Knowles Loom Works, Worcester, Mass., a Corporation of Massachusetts Application April 9, 1949, Serial No. 86,583

(CI. 139-8S) 8 Claims.

p This is a continuation in part of my copending application, Serial No. 39,209, filed July 17, 19 18,

is attached to one or more harness frame connectors. In the past it has been customary to make the jack eyes of malleable iron, but when made in this manner they are likely to be rough enough to require some cleaning and are also V expensive because of the step of molding involved in their manufacture. In many looms the jack eye engages a single harness connector, but in other instances the jack eye is required to engage two connectors.

It is an important object of the present invention to provide a jack eye bent from a single piece of wire so shaped as to have an eyelet at one end for a harness Connector and a loop or slot at the other end to surround the jack lever.

The harness connectors frequently include a round wire formed with a hook for the eyelet and in order to reduce wear between the hook and eyelet it is a further object of the invention to make the jack eye of a wire which is rounded or convex on one side and bent in such manne' that the rounded side thereof is on the inside of the eyelet to engage the hook on the connector.

The harness or jack levers are ordinarily close to each other and the jack eyes extend laterally on each side of the lever. In order that the space occupied by the jack eye may be reduced to a minimum it is a further object of the inventicn to make the eye of a Wire having a flat surface and bend the wire so the fiat surface will be on the outside of the eye. The wire of which the jack is formed may conveniently be semicircular in cross section to provide an eye having an inner rounded surface and having a fiat sur face on the outside.

When the invention is applied to jack eyes which cooperate with two harness connectors the eyelet will be the same as that for the preferred form, but in addition there Will be a cross bar or the like for the second .connecter. The cross bar can be made either by bending the ends of the wire to lie close to each other transversely of the jack eye, or the side sections of the `wire can be bent toward each other, but in any event the rounded inner surface of the jack eye 'will engage the second Connector.

With these and other objects in view which will appear as the description proceeds, my invention resides in the combination and arrangement of parts hereinafter described and set forth.

In the accompanying drawings, wherein three forms of the invention are set` forth:

Fig. 1 is a front elevation of an end of the upper part of a loom showing harness mechanism with the preferred form of the invention adaptedmore particularly for use with a single connecter applied thereto,

Fig. 2 is an enlarged plan view looking in the direction of arrow 2, Fig. 1, setting forth one of the jack eyes of the preferred form and showing the assocated jack lever in cross section,

Fig. 3 is a vertical longitudinal section on line 3-3, Fig. 2,

Fig. 4 is a vertical transverse section on line 4-4, Fig. 2,

Fig. 5 is similar to Fig. 2 but shows the first modified form of the invention adapted more particularly for use with two harness connectors,

Fig. 6 is a vertical longitudinal section on line G- 6, Fig. 5,

Fig. 7 is a view similar to Fig. 6, but shows the second modification of the invention and Fig. 8 is a front elevation looking in the direction of arrow 8, Fig. 7.

Referring particularly to F'ig. 1, a loom frame Hi is provided with one or more arches l l to support a harness Operating mechanism designated generally at K. This mechanism, which may be a dobby or Knowles head, includes several harness or jack levers pivoted on a pin 12 stationary with respect to the loom frame. Two of these lever-s are shown in Fig. 1, lever [3 having been moved in a clockwise direction to the extreme right hand position thereof corresponding to the down position of the associated hamess rreme M, while the other lever 1'5 has been moved in a counter-clockwise direction to the extreme left hand position thereof corresponding to` the raised position of harness frame !6. Each lever is provided with notches Il along the outer or left edge thereof, as viewed inrFig. 1.

The arches support studs 20 and 2l on which are rotatably mounted two sets 22 and 123 of harness sheaves. Each harness frame has two cords 24 and 25 trained over corresponding sheaves. As shown in Fig. 1 both of these cords are attached to a single wire connector 26 passing through a jack eye J. When a harness frarne is to be raised the corresponding jack lever will be moved to the leit from the position of lever [3 to that of lever !5. When the harness frame is to be lowered the jack eye and lever move to the right. v

The matter thus far described, except the jack eye J, is of common Construction and of itself forms no part of the present invention. The cords or connectors may if desired pass through the jack eyes without requiring the link or connector 26, and the invention to b'e set forth hereinafter is not necessarily limited to use with the harness mechanism K. j

In all three forms of the invention the jack eye is formed from a single piece of steel wire W which is preferably flat as at 30 on one side 'and rounded or convex as at 3! on the opposite side. In the preferred form shown in Figs. 2, 3

and 4 one end of the wire is bent to form a short eyelet 32 for the harness connector 26, while the other end is bent to form a bight 33 to enter one of the notches l'l of a jack lever, and has long side section 34 which extends back toward the eyelet. The section 34 is parallel to and spaced rrom an intermediate straight section 35 and with the 'latter forms a loop or slot 35 for a jack lever. The wire is bent so that the convex or rounded side 3! is on the inside of the eyelet and slot. This provides rounded surfaces for engagement with the connector 23 and the jack lever. The end 31 of the wire in which eyelet 32 is formed terminates at a point 38 spaced from the straight section 35, and the extreme right end 39 of section 34 may be curved down as shown in Fig. 2 and enter between the end 31 and section 34, or under the adjacent end of eyelet 32 so that the later prevents movement of said end 39 in a direction away from the intermediate section 35.

The first modified form of the invention shown in Figs. and 6 is adapted more particularly for use with' harness mechanisms in which each harness cord has its own connector. Instead of the single connector 26 there are two connectors 40 and 41, connector 40 being attached to cord 25 'and connector being attached to cord 24. Each of the connectors 40 and 4! is formed with a hook 42 for engagement with the first modified form of jack eyedesignated at J I.

This eye is formed by a wire similar to that used in the preferred form but bent symmetrically about a longitudinal axis. An'eyelet 43 for connector 43 is formed at the right end of eye J l by bending the wire midway between its ends, see Fig. 5. Eyelet 43 has parallel sides or sections 44 'and 45 which are bent toward and into engagement with each other as at 46 to form a cross bar or the like 41 for hook 42 of connector 4! To the left of the cross bar the eye is formed with two spaced parallel sides or sections 48 and '49 which -define between them a slot 50 for a jack lever.

'versely of section 55 to form a cross bar member The left end of the side or straight section 55 is bent on itself to form a bight 58 and then extends to the right to form a section 59 parallel to and spaced from section 55 to` form a lever slot 34). The extreme right endof section 59 is also bent toward and transversely of section 55 to form another cross bar member Bi. The flat sides 30 of the ends 51 and e lie close to each other and can be welded or otherwise secured together, as at 62.

In order to avoid interference between connectors 49 and 4! it is desirable to have the eyelet and cross bar offset one with respect to the other, as shown, for instance, in Fig. 6. This offset is accomplished by, bending the side sections of the jack eye Jl as at 65 between the cross bar 46 and the end of the eyelet 43. In the second modified form a similar bend 66, Fig. 8, provides the oiTset.

From the foregoing it will be seen that the invention provides a simple form of jack eye made of a wire one side of which is fiat and the other side of which is convex, the wire being bent in such manner that the convex or rounded part is 'on the inside to provide a good wearing surface for the harness connectorsand flat on the outside to provide clearance when jack levers move in opposite directions. In the preferred form the long straight side 34 has an end 39 caught under the eyelet 32 and is thus 'oraced and supported to Withstand any spreading force which attends liting of a harness frame. In the modified forms the jack eye has an eyelet similar to that of the preferred form, but in addition has a cross bar provided for a second harness connector. The wire is of such form that'its rounded part is placed to engage the hook of the second connector. In both modified forms the bend for producing the ofiset, as 65 or 56, is located between the connector end of the eyelet and'the cross bar, although this is not essential in all forms of the invention. In the second modification it will be sufiicient if cross bar member %I only is used.

Having thus described the invention it will be seen that changes and modifications of the fore- 'going specific disclosure may be made without departing from the spirit and scope of the invention.

What is claimed as new is:

l. A jack eye for a loom harness having a harness lever and a harness frame connector, the jack eye comprising a single piece of wire fiat on one side and rounded on the opposite side bent on itself to form a jack eye having a straight section intermediate the ends of the wire, one end of the latter being formed with a sho'rt bend to form an eyelet for the connector and terminating at a point spaced from said straight section, the other end of the wire being bent to form a bight and then extending parallel to and s'paced from said section to form a slot for the harness lever and entering the space between said straight section and said point, the wire .being bent so that the rounded side thereof is on the inside of the eyelet and b ight.

2. A jack eye for a loom harness having a harness lever and two harness frame connectors. the jack eye comprising a single piece of wire fiat on one side and rounded on the opposite side bent on itself midway between its ends to form an eyelet for one of said connectors, the wire having sections extending away from the eyelet parts of which are spaced from each other to form a slot for the harness lever and other parts of which are bent toward and secured to each other between said eyelet and slot to form a cross bar for the other connecter, the ends of the wire being bent toward each other to form the end of said slot remote from the eyelet, the wire being so bent that the rounded side thereof is on the inside of said eyelet and slot.

3. A jack eye for a loom harness having a harness lever and two harness frame connectors, the jack eye comprising a single piece of wire fiat on one side and rounded on the op posite side bent on itself to form a jack eye having `a straight section intermediate the ends of the wire, one end of the wire being bent on itself to form an eyelet for one of said connectors and having a part extending transversely of the straight section to form a cross bar member, the other end of the wire being bent to form a bight and then extending parallel to and spaced from said section to form a slot for the harness lever, said other end extending transversely of said straight section to form a second cross bar member lying along and Secured to said first cross bar member, said wire being bent so that the rounded side thereof is on the inside of the eyelet and slot. i

4. A jack eye for a loom harness having a harness lever and two harness frame connectors, the jack eye comprising a single piece of wire flat on one side and rounded on the opposite side bent on itself to form a jack eye having a straight section intermediate the ends of the wire, one end of the wire being bent on itself to form an eyelet for one of said connectors, the part of the wire at the end of said straight section being bent back on itself to form a second straight section extending parallel to and spaced from said straight section to form a slot for the harness lever, the end of said second section being bent to extend transversely of said straight sections to form a cross bar member for the other connector, the wire being bent so that the rounded side thereof is on the inside of the eyelet and on the side of said cross bar member facing said slot.

5. A jack eye for a loom harness having a harness lever and aharness frame connector, the jack eye comprising a single piece of wire fiat on one side and rounded on the opposite side bent on itself to form a jack eye having a straight section intermediate the ends of the wire, the wire having an end thereof formed with a short bend to form an eyelet for the connecter and the wire having another end bent to form a bight and then extending parallel to and spaced from said section to form a slot for the harness lever, one of said ends of the wire terminating at a point spaced from said section and one of said ends of the wire entering the space between said one end and said section and being prevented by said one end from moving in a direction away'from said section, the wire being bent so that the rounded having another end bent side thereof is on the inside bight.

6. A jack eye for a loom harness having a harness lever and a harness frame Connector, the jack eye comprising a single piece of wire flat on one side and rounded on the opposite side bent on itself to form a jack eye having astraight section intermediate the ends of the wire, the wire having an end thereof formed With a short bend to form an eyelet for the Connector and the wire having another end bent to form a bight and then extending parallel to and spaced from said section to form a .slot for the harness lever, the ends of the wire being bent toward said section and engaging each other and at least one of said ends preventing movement of the other end away from said section, the wire being bent so that the rounded side thereof is on the inside of said eyelet and bight.

7. A jack eye for a loom harness having a harness lever and a harness frame connecter, the jack eye comprising a single piece of wire flat on one side and rounded on the opposite side bent on itself to form a jack eye having a straight section intermediate the ends of the wire, the wire having an end thereof formed with a short bend to form an eyelet for the connecter and the wire to form a bight and then extending parallel to and spaced apart from said section to form a slot for the harness lever, at least one of said ends being bent toward said straight section and being prevented from moving away from said section by the other end, the wire being bent so that the rounded side thereof is on the inside of said eyelet and bight.

8. A jack eye for a loom harness having a harness lever and a harness frame Connector, the jack eye comprising a single piece of wire fiat on one side and rounded on the opposite side bent on itself to form an elongated jack eye, part of the wire between the ends of the jack eye being bent toward other parts of the wire also between the ends of the jack eye and With said other parts forming a substantially closed eyelet for the connector and a substantially closed slot for the harness lever, the wire being bent so that the rounded side thereof is on the inside of said eyelet and bight.

of said eyelet and WILLIAM A. BLANC'HARD.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number 

